/Engine/Plugins/Compositing/OpenColorIO/Source/OpenColorIO/Public/OpenColorIOShared.h
Checks to see if the shader map is already being compiled for another color transform, and if so adds the specified color transform to the list to be applied to once the compile finishes.
True if the shader map was being compiled and we added ColorTransform to the list to be applied.
bool TryToAddToExistingCompilationTask ( [FOpenColorIOTransformResource](API\Plugins\OpenColorIO\FOpenColorIOTransformResource) * InColorTransform )